A Fox Lake teenager pleaded guilty Wednesday to the reckless homicide of a man who suffered a fatal injury while trying to stop her and two juvenile accomplices from stealing his cellphone.

Courtney Sherman, 18, faces probation or up to five years in prison when she's sentenced next month.

Prosecutors said Sherman used a fake name when she responded to an ad on a resale app in April and arranged to meet Trinidad Bueno-Sanchez in a Round Lake Beach parking lot to buy his iPhone for $450.

But instead of the agreed-upon price, the envelope one of the girls handed to Bueno-Sanchez contained just $3. When he saw he'd been shortchanged, Bueno-Sanchez grabbed the window of the car to try to stop the thieves from fleeing. Sherman, who was seated in the rear behind the driver, kicked the driver's seat and yelled, "Go go, go!" Lake County Assistant State's Attorney Eric Kalata said.

As the driver sped away, Bueno-Sanchez, a 43-year-old North Chicago man, fell to the pavement and suffered a fatal head injury. His wife, Maria, was with him at the time.

The two girls present with Sherman were charged in juvenile courts and both have pleaded guilty, Kalata said. They are due to be sentenced Nov. 1, while Sherman is scheduled to learn her sentence Nov. 30.

Defense attorney James Schwarzbach said Sherman has no prior arrests and noted that she was not the driver.